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Test your basic knowledge |
Dairy Cattle And Reproduction
Start Test
Study First
Subjects
:
industries
,
dairy
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Hold the penis in the bulls body when not in use. releases penis before ejaculation or urination.
age and castration
Where livelihood is in agriculture
van deferens
retractor muscles
2. Animal which has been castrated after puberty
stag
oviducts
1. more cost effective - 2. powdered milk is in excess production
seasonally polyestrous
3. 1. brain function - 2. blood flow - 3. willing female
what has to happen for males for copulation to occur
penis sizes vs delivering methods
leydid or interstitial cells
organs used in spermatogenesis
4. (from Jersey Islands in Great Britain) Smallest cow - least milk - highest butterfat %
ewe gestation
4 major reasons for culling dairy cows
Jersey Cow
Blood
5. FEED
#1 cost in production
dairy cattle pregnancy check
butterfat
uterus
6. (LH) causes female's egg to break (her period)
cow estrus
age and castration
Lutinizing Hormone in females
oviducts
7. 114 days
Dairy Cattle Gestation
sow gestation
sow estrus
cow estrus
8. Castration tool which clamps down on the vans deferens. causes the sperm to not reach the penis to be ejaculated
monestrous
penis and prepuce observation (BSE)
burdizzo
cervix
9. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off
prostaglandin
Holstein Cow
elastrator
mastitis
10. 1-2 days
~1 month
vagina
ewe estrus
Mares
11. Male on one pin and female on other side
cow gestation
libido test (BSE)
feeding a high producing dairy cow
seminiferous tubules
12. 24 hours before end of estrus cycle
Reasons for gestation length being affected
4 major reasons for culling dairy cows
mare ovulation
cow gestation
13. Animals which have many estrous periods per year (ex: cow - sow)
Blood
mare estrus
polyestrous
sow gestation
14. Standing to be mounted (last one able to notice); mounting other animals; social behavior-restless - gregarious - activity - vocalizing; frequent urination; mucous discharge
accessory sex glands
organs used in spermatogenesis
Reasons for gestation length being affected
behavioral signs of estrus
15. 1. reproduction - 2. mastitis/udder problems - 3. low milk production - 4. soundness/poor feet and legs (living on concrete)
penis sizes vs delivering methods
ewe estrus cycle
4 major reasons for culling dairy cows
growth lost from castration methods (knife & band)
16. 24 hours before end of estrus cycle
polyestrous
ewe's estrous cycle
functions of progestrone
mare ovulation
17. Constitute 50-90% of the volume of the ejaculate. (3 glands total: seminal vesicles - prostate gland - cowper's gland)
~1 month
estrus
accessory sex glands
ewe estrus
18. When are steers and heifers weaned from bottle feeding?
scrotum
6-8 weeks
effects of estrogen
prostaglandin
19. Animals which have many estrous periods during certain periods per year (ex: mare - ewe)
sow estrus cycle
penis sizes vs delivering methods
mastitis
seasonally polyestrous
20. Birthing process (termination of gestation)
hormones
uterus
Parturition
cow gestation
21. Can survive ~7 days in cow. vast majority <48 hours
dartos muscle
Sperm survival specs
spermatogenesis
sow estrus cycle
22. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract
dry matter and water
testis (gonads)
penis proper
eminal vesicles
23. Cleans and lubricates the urethra ahead of the sperm. (if not - the urine in the urethra has a high salt content and would cause sperm to rupture and die)
hypothalamus and pituitary gland
prostate gland
Lutinizing Hormone in males
Follical Stimulating in females
24. Can produce 200 calves naturally (~100 bulls) - top 1-2% will grade like him. everything left to chance if no AI performed
Avg. bull specs
Mares
prostate gland
sigmoid flexure
25. To remove/separate testicles from animal's body before animal reaches puberty
femininity of a heifer
castration
testis (gonads)
Dairy Cattle milking schedule
26. Supply nutrients for the sperm following ejaculation and deposition into the female reproductive tract
scrotal circumference (BSE)
eminal vesicles
sow gestation
cowper's gland
27. Located directly in front of the cervix. fertilized egg implants here. connected to two uterine horns. implantation occurs on the same side as ovulation occurred.
uterus
spermatogenesis
van deferens
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
28. 19-23 (21) days
sow estrus
prostaglandin
sow estrus cycle
sigmoid flexure
29. Important 'landmark' during palpation
cervix
growth lost from castration methods (knife & band)
mare's estrous cycle
cowper's gland
30. 1-3 days
mastitis
organs used in spermatogenesis
Where livelihood is in agriculture
sow estrus
31. FEED
Dairy Cattle Lactation (standard)
#1 cost in production
mastitis
mare's estrous cycle
32. Knife-loose ~1wk of growth. band-loose ~2wks of growth.
reasons for castration
what has to happen for males for copulation to occur
burdizzo
growth lost from castration methods (knife & band)
33. Failure to have both testis (gonads) descend
reasons for castration
age and castration
Hormones from both the fetus and the mom.
cryptorchid
34. Superior genes are _______ to multiply
Hard
vagina
polyestrous
reason for seasonal breeding periods
35. (male) pushes the testes outward toward the legs for a cool-down off of the body
spermatogenesis
Reasons for gestation length being affected
cremaster muscle
Sperm growth rate
36. Larger the cow - more milk is produced; smaller the cow - less milk is produced
Size of cow in relation to the amount of milk produced
hormones
Follical Stimulating in females
mare estrus
37. Small tubes located at the upper ends of the uterine horns. connects uterine horn to infundibulum. passageway of the egg.
oviducts
sow estrus
reason for seasonal breeding periods
retractor muscles
38. (FSH) causes egg to mature in females
~1 month
cow ovulation
pelvis
Follical Stimulating in females
39. Birthing process (termination of gestation)
Parturition
cow estrus cycle
libido test (BSE)
age and castration
40. 45-60 days after breeding; re-breed as required
cow gestation
semen evaluation (BSE)
dairy cattle pregnancy check
Testicles will produce testosterone but not sperm. Bull will attempt to mate - but will be sterile
41. (male) pushes the testes upward toward the body for warmth or protection
burdizzo
dartos muscle
estrous
cow estrus
42. (FSH) causes egg to mature in females
Sperm survival specs
Follical Stimulating in females
ewe gestation
ewe estrus cycle
43. 1. to eliminate breeding the females at an early age - 2. makes animals less lean and provides a better cut for the market
mare estrus
things to check for in a breeding soundness exam (BSE)
penis and prepuce observation (BSE)
reasons for castration
44. Not being bred back into herd. horses are seasonal breeders vs. cows as anytime breeders
Mares
Culls bulls earlier (2 reasons)
Avg. bull specs
Reasons for gestation length being affected
45. Cleans and lubricates the urethra. secretion is thick - viscous - and very slippery.
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46. Failure to have both testis (gonads) descend
cryptorchid
Lutinizing Hormone in females
organs used in spermatogenesis
vagina
47. Castration tool that uses a band around the testicles which cuts off circulation and eventually the testicles fall off
semen evaluation (BSE)
elastrator
mare gestation
Brown Swiss Cow
48. Pulls sperm and egg together - gets body ready for pregnany - stimulates growth cells - develops mammary glands - starts to deposit fat.
effects of estrogen
ewe gestation
oviducts
Jersey Cow
49. 19-23 (21) days
sow estrus cycle
mare's estrous cycle
penis proper
Grading choice
50. (LH) causes female's egg to break (her period)
dry matter and water
Lutinizing Hormone in females
monorchid
scrotum